ENWIKI New Editors / day 1D: 21% 30D: 18% YTD:
Editor engagement vital signs
key performance indicators for user engagement, community and content growth
aggregated daily / weekly / monthly
for every single Wikimedia project
New users Community Content Curation
Newly registered users
Productive new editors
Surviving new editors
Very active editors
Measure quantities that describe important phenomena
Make research easily reproducible and verifiable
Provide formal specifications, remove ambiguity
Replace proprietary, ad-hoc metric definitions; compare apples to apples
Make metrics replicable via multiple data sources at any point in time
Computable at different time scales
Does new editor productivity vary when we measure it over the first day or the first week?
Does it really matter to limit new editor activation to main namespace edits only?
Does the length of the trial and survival period affect the measurement of new editor survival?
Why does this matter at all?
1. Data exploration
“Newly registered users on German and Dutch Wikipedia have a higher activation
rate than newbies on English Wikipedia”
“Spanish Wikipedia adds every day twice as many new editors than German
Wikipedia, despite having only half its new user activation rate”
2. Natural experiments
“A change in abuse filter rules on the Italian Wikipedia significantly increased new